Merge branch 'pipeline-emails' into 'master'

Add a new pipeline email service

## What does this MR do?

Add a new pipeline email service

## What are the relevant issue numbers?

Closes #3976 

## Remaining tasks

* [x] Preserve `·` and ` `
* [x] Use XHTML 1.0
* [ ] Use the same layout (`app/views/layouts/notify.html.haml`)
* [ ] Digest or not (assets or public)
* [x] A similar email for succeeded pipeline
* [x] Plain text versions for both emails

## Screenshots (if relevant)

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6019#note_16594345

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] `PipelinesEmailService`
  - [x] `SendPipelineNotificationService`

See merge request !6019

1 files changed, 16 insertions, 0 deletions

diff --git a/app/helpers/gitlab_routing_helper.rb b/app/helpers/gitlab_routing_helper.rb
index 670a7ca36f4..bccf64d1aac 100644
--- a/app/helpers/gitlab_routing_helper.rb
+++ b/app/helpers/gitlab_routing_helper.rb
@@ -94,6 +94,22 @@ module GitlabRoutingHelper
     namespace_project_merge_request_url(entity.project.namespace, entity.project, entity, *args)
   end
 
+  def pipeline_url(pipeline, *args)
+    namespace_project_pipeline_url(pipeline.project.namespace, pipeline.project, pipeline.id, *args)
+  end
+
+  def pipeline_build_url(pipeline, build, *args)
+    namespace_project_build_url(pipeline.project.namespace, pipeline.project, build.id, *args)
+  end
+
+  def commits_url(entity, *args)
+    namespace_project_commits_url(entity.project.namespace, entity.project, entity.ref, *args)
+  end
+
+  def commit_url(entity, *args)
+    namespace_project_commit_url(entity.project.namespace, entity.project, entity.sha, *args)
+  end
+
   def project_snippet_url(entity, *args)
     namespace_project_snippet_url(entity.project.namespace, entity.project, entity, *args)
   end